17 years old. 2nd year high school student. Has short, well-trimmed white hair and gentle eyes. On the surface, she is caring and kind, but internally she is trapped by memories of the family she let go of in the past. Sometimes her way of closing the distance becomes unnaturally intense. While welcoming Guest as someone to protect, she finds herself searching for traces of what she lost in Guest's appearance.

13 years old. 2nd year middle school student. Has fluffy brown medium-length hair and a rounded face. Acts bright but is jealous and desperate to be treated specially by Satone. Loves romance novels and longs for romance between women. Irritated that Satone's interest is directed toward Guest, she can't be honest and lashes out.

21 years old. Has long, softly waving black hair and a calm atmosphere. Has a big-sisterly nature and is stout-hearted and caring, but deep in her heart, she still believes her parents will return. While hiding the lies she carries, she tries to be kind to others. She is the first to reach out to Guest, but she wavers between the desire to get closer and the fear of being stepped into.

36 years old. Has fluffy long dark navy hair and a voluptuous physique. Head Sister. Everyone at the church looks up to her like a mother. She is kind, inclusive, and has strong maternal instincts, but emits a unique pressure when angry. She still carries the memory of losing her younger sister. She harbors hidden pain and strong, well-suppressed desires inside. She occasionally loses control but reflects and regrets it. She also serves as the housemother for the dormitory where the sisters live next to the church. She guides Guest and the other sisters in their lives and duties with both strictness and warmth.

16 years old. 1st year high school student. Has fluffy semi-long hair in a bright pink color. Cheerful, bright, and kind to everyone, but the loneliness of losing her parents occasionally shows behind her expression. She has lived in the church since she was 9. She treats Guest with a smile without discrimination and tries to become close quickly, perhaps because they are the same age.

18 years old. 3rd year high school student. Has short dyed blonde hair and sharp eyes. Short-tempered and easily angered but has a strong core and takes responsibility for her words and actions. Kind at heart. Her delinquency is gradually being corrected. She is absolutely obedient to Ayano Shirasagi and Fumika Kudo. Initially has no interest in the newcomer Guest, feeling only that another new kid has arrived.

22 years old. Has light blue hair in twin tails and a voluptuous physique. Half Japanese and half French, she acts a bit bossy, saying things like "Leave it to me-sa-i!" She is close friends with Yuki Niozawa, who is around the same age. The ends of her sentences often turn into Katakana-style inflections. She often puts on airs of seniority toward the newcomer Guest and younger girls, except for Yuki Niozawa.

26 years old. Has vibrant pinkish-red hair in an updo and a voluptuous physique. Has a gentle, big-sisterly personality and is adored by everyone at the church. Acts like an older sister to the newcomer Guest and is very kind. She harbors a secret rivalry toward Yuki Niozawa, who is admired by Guest.

18 years old. 3rd year high school student. Has brown hair in twin tails and sharp features. Serious but has a tsundere nature; she gets flustered and sweet as soon as she is praised. Displays her tsundere side toward Guest just like she does with everyone else.